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Results: 1 through 50 of 188 (3.078 secs)
You searched for: subject:"solar flares"
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[texts]An atlas of solar flare effects observed on long VLF paths during 1961 (Volume NBS Technical Note 210) - Chilton, C. J.; Steele, F.K.; Crombie, D.D.

Keywords: Solar flares
Downloads: 56
[texts]Extreme ultraviolet flashes of solar flares : observed via sudden frequency deviations / Richard F. Donnelly - Donnelly, Richard Frank
"September 1970"
Keywords: Solar flares
Downloads: 101
[texts]An atlas of solar flare effe[c]ts in the ionosphere observed with a high-frequency Doppler technique, September 1960-December 1962. (Volume NBS Technical Note 326) - Baker, Donald Milford, 1938-

Keywords: Solar flares; Ionosphere
Downloads: 48
[texts]Studies of solar flare effects and other ionospheric disturbances with a high frequency Doppler technique. (Volume NBS Technical Note 306) - Agy, V.; Baker, D. M.; Jones, R. M.
This report presents some results of work done with a Doppler technique for studying ionospheric disturbances. The theoretical results include a calculation of the frequency shifts to be expected from ch * anges in the parameters of a parabolic model iono
Keywords: Solar flares; Ionosphere
Downloads: 149
[texts]On complete averaging with several intermediate elements in the cononical problem of celestial mechanics - Moiseyev, N. D
No Abstract Available
Keywords: SOLAR FLARES; SOLAR MAGNETIC FIELD; CHROMOSPHERE
Downloads: 70
[audio]1110 KBND Your Town 1-31-12: Sunriver Nature Center
Rob Bingham is in the studio to talk about solor flares, and other evnts happening at the sunriver Nature Center and Observatory
Keywords: Sunriver Nature Center; Observatory; 1110 KBND; Your Town; solar flares
Downloads: 7
[audio]Top 3cast Episode 8: They're Called Killer Whales for a Reason - Tone Hoeft
You are going to die. Seriously. If science tells us anything, it is that any number of natural disasters can kill you at any moment. The one that scientists happen to be up in arms about this week is solar flares. But it's not all gloom and doom. We discuss chick flicks, Facebook, Sea World, Google, and the internet. We also talk a lot about scientific methods and a recent study that shows liberals are "smarter" than conservatives...
Keywords: news stories; killer whales; Google; science; solar flares
Downloads: 49
[texts]On the diurnal magnetic activity in the high-latitude regions and on a property of the solar wind - Bitoun, J.
No Abstract Available
Keywords: IONOSPHERIC DISTURBANCES; LONG WAVE RADIATION; NIGHT SKY; CHROMOSPHERE; SOLAR FLARES
Downloads: 64
[texts]The nature of a weak chromospheric flare (o prirode slaboy khromosfernoy vspyshki) - Stoyanova, M. N
Weak chromospheric flare studies using horizontal solar telescope
Keywords: CHROMOSPHERE; SOLAR FLARES; SPECTROGRAMS; TELESCOPES; CHROMOSPHERE; SOLAR FLARE
Downloads: 54
[texts]GEOSEL Transport System (GTS) - NON
No Abstract Available
Keywords: RESEARCH MANAGEMENT; SOLAR PHYSICS; SUN; SOLAR ACTIVITY; SOLAR FLARES
Downloads: 100
[texts]Ground Reaction Forces in 1G and Simulated Zero-Gravity Running - McCrory, Jean L.
This research compared ground reaction forces during overground (1G) running and zero-gravity ty (0G) simulated treadmill running at a full body weight load in two restraint harness designs.
Keywords: SOLAR FLARES; X RAYS; POINT SOURCES; IMAGING TECHNIQUES; SPECTROSCOPY
Downloads: 83
[texts]SCT-1 rocket engine - Buitron, P. B
No Abstract Available
Keywords: DEUTERIUM; SOLAR SPECTRA; SUN; CHEMICAL COMPOSITION; PHOTOELECTRIC EMISSION; SOLAR FLARES
Downloads: 81
[texts]Biosynthesis of pseudouridine in transfer ribonucleic acid - Cortese, R.
No Abstract Available
Keywords: INTERPLANETARY MEDIUM; PARTICLES; SOLAR FLARES; AEROSPACE SCIENCES; OGO
Downloads: 71
[texts]The nature and localization of chromospheric flares (k voprosu o prirode i lokalizatsii khromosfernykh vspyshek) - Slonim, Yu. M
Nature and localization of solar flares in chromosphere
Keywords: ASTRONOMY; CHROMOSPHERE; POSITION (LOCATION); SOLAR FLARES; ASTRONOMY; CHROMOSPHERE; SOLAR FLARE
Downloads: 57
[movies]SKYLAB - SPACE STATION I - NASA/JSC
Astronauts: (first) Charles Conrad, Jr., Paul J. Weitz, and Joseph P. Kerwin; (second) Alan L. Bean, Owen K. Garriott, and Jack R. Lousma; and (third) Gerald P. Carr, William R. Pogue, and Edward G. Gibson Launch date of unmanned space station: May 14, 1973 Launch dates of manned missions: May 25, 1973; July 28, 1973; and November 16, 1973 Reviews the repair operation of the first mission, proving mans presence is vital to successful space exploration...
Keywords: Skylab; Space Station; space exploration; solar flares; NASA; JSC
Downloads: 497
[texts]Before This Decade Is Out...: Personal Reflections on the Apollo Program - NON
This handbook presents ''Before This Decade Is Out...'' Personal Reflections on the Appolo Program. The accounts included in this book are a small sampling of the large number of oral histories that have been conducted under the auspices of the NASA history program, since near the beginning of the Agency. They also represent the many personal contributions made during Project Apollo, the single largest peacetime endeavor in American history...
Keywords: IMAGING TECHNIQUES; SOLAR FLARES; COLLIMATORS; X RAYS; SPECTROSCOPY; ROTATION
Downloads: 332
[movies]Solar Sail Readies for Early Warning Mission
NASA's Solar Sail project, directed by L'Garde of Tustin, Calif., plans to take this innovative technology beyond Earth's orbit. The spacecraft will have a "sail" one quarter the size of a football field and park in a pseudo LaGrange point closer to the sun to double the current warning period for dangerous solar flares. Slated for launch in late 2014, the instrument aboard the solar sail craft will use the sun's photon radiation to gently offset the corresponding pull of the sun's gravity.
Keywords: What -- Sun; Marshall Space Flight Center; NASA; Solar Sails; exploration; beyond earth orbit; solar flares
Downloads: 37
[texts]Tropical Warm Pool Surface Heat Budgets and Temperature: Contrasts Between 1997-98 El Nino and 1998-99 La Nina - Chou, Shu-Hsien
Seasonal and interannual variations of the net surface heating F(sub NET) and sea surface temperature tendency (T(sub s)/dt) in the tropical eastern Indian and western Pacific Oceans are studied. The surface heat fluxes are derived from the Special Sensor Microwave/Imager and Japanese Geostationary Meteorological Satellite radiance measurements for the period October 1997-September 2000. It is found that the magnitude of solar heating is lager than that of evaporative cooling, but the spatial va...
Keywords: SOLAR FLARES; CORONAL MASS EJECTION; PARTICLE ENERGY; SOLAR CORPUSCULAR RADIATION; SOLAR STORMS; SUN; CORONAS
Downloads: 46
[texts]Shapes of Nonbuoyant Round Luminous Laminar-Jet Diffusion Flames in Coflowing Air - Lin, K.-C.
The shapes (luminous flame boundaries) of steady nonbuoyant round luminous hydrocarbon-fueled laminar-jet diffusion flames in coflowing air were studied both experimentally and theoretically. Flame shapes were measured from photographs of flames burning at low pressures in order to minimize the effects of buoyancy. Test conditions involved acetylene-, propylene. and 1,3-butadiene-fueled flames having initial reactant temperatures of 300 K, ambient pressures of 19-50 kPa, jet-exit Reynolds number...
Keywords: SOLAR FLARES; VISIBILITY; SIMULATION; RESOLUTION; FAST FOURIER TRANSFORMATIONS; IMAGING SPECTROMETERS; PHOTOMETRY
Downloads: 79
[texts]Relativity - On the inner problem in the case of a curved space-time of spherical symmetry - Darmois, G
No Abstract Available
Keywords: MAGNETOHYDRODYNAMIC STABILITY; MAGNETOHYDROSTATICS; NONUNIFORM MAGNETIC FIELDS; SOLAR FLARES; CHROMOSPHERE; MATHEMATICAL MODELS; PLASMA DYNAMICS
Downloads: 70
[texts]Emission of flares in the x-ray region of the spectrum (izlucheniye vspyshek v rentgenovoskoy oblasti spektra) - Dvoryashin, A. S.
X-ray and radio emission by solar flares
Keywords: RADIO EMISSION; SOLAR FLARES; SPECTRA; X RAYS; RADIO EMISSION; SOLAR FLARE; X-RAY
Downloads: 64
[texts]Investigation of a dc arc at increased pressure - Zaydel, A. N., et al
No Abstract Available
Keywords: RADIATION DOSAGE; SCINTILLATION COUNTERS; SPACECRAFT ENVIRONMENTS; CHARGED PARTICLES; CHROMOSPHERE; RADIANT FLUX DENSITY; RADIATION BELTS; SOLAR FLARES
Downloads: 72
[texts]On the relationship of X-ray emission of solar flares with their effects in cosmic rays - Pankratov, A. K.
X-ray emission of solar flares related to their effects in cosmic rays
Keywords: COSMIC RAYS; D REGION; EMISSION; SOLAR FLARES; X RAYS; COSMIC RAY; SOLAR FLARE; X-RAY
Downloads: 71
[texts]The Sun as a Non-state Actor: The Implications on Military Operations and Theater Security of a Catastrophic Space Weather Event - Kabat, Brian W.
The Sun as a Non-state Actor: The Implications on Military Operations and Theater Security of a Catastrophic Space Weather Event by Brian W. Kabat. "Modern society relies heavily on robust technology to provide basic communications, positioning, timing, and general population security. The operational commander similarly relies on technology to prosecute missions both in peace and during times of conflict...
Keywords: EMP; Space weather; Solar flares; Solar activity; Space environment; CME; Electromagnetic Pulses
Downloads: 45
[texts]Computational Simulation of Damage Progression of Composite Thin Shells Subjected to Mechanical Loads - Gotsis, P. K.
Defect-free and defected composite thin shells with ply orientation (90/0//-75) made of graphite/epoxy are simulated for damage progression and fracture due to internal pressure and axial loading. The thin shells have a cylindrical geometry with one end fixed and the other free. The applied load consists of an internal pressure in conjunction with an axial load at the free end, the cure temperature was 177 C (350 F) and the operational temperature was 21 C (70 F)...
Keywords: SOLAR FLARES; SUN; IMAGING TECHNIQUES; FORBUSH DECREASES; SUNSPOTS; X RAYS; COLLIMATORS
Downloads: 72
[texts]The Extreme Solar Storms Of October To November 2003 - Plunkett, S.P.
The Extreme Solar Storms of October to November 2003 "In recent decades, humans have come to rely on space technology for an ever-increasing variety of purposes, including human exploration of the solar system, scientific research, national defense, and commercial activities. The field of space weather seeks to understand and predict variability in the space environment. The Sun is the source of all space weather, and the origins of major space weather storms can be traced to explosive releases ...
Keywords: EMP; CME; Space environment; Solar activity; Solar flares; Space weather; Electromagnetic Pulses
Downloads: 28
[movies]NASA Connect - HASB - Solar Flares Student Activity - NASA LaRC Office of Education
NASA Connect segment involving students in an activity that investigates the cycles of solar flares. The video incorporates problem solving strategies while students compute percentages of M-class flares and graph data.
Keywords: NASA Connect; Sun; Solar Flares; M-class Flares; Graph; Problem Solving; Solar Cycles; Student Activity
Downloads: 88
[texts]Net Thermal Radiation in the Atmosphere of Venus - Revercomb, H. E.
The four entry probes of the Pioneer Venus mission measured the radiative net flux in the atmosphere of Venus at latitudes of 60 deg. N, 31 deg. S, 27 deg. S, and 4 deg. N. The three higher latitude probes carried instruments (small probe net flux radiometers; SNFR) with external sensors. The measured SNFR net fluxes are too large below the clouds, but an error source and correction scheme have been found (H...
Keywords: SOLAR FLARES; IMAGING TECHNIQUES; ASTROPHYSICS; PHOTONS; GAMMA RAYS; COLLIMATORS; ALBEDO; SPECTROSCOPY; SPATIAL RESOLUTION; POINT SOURCES
Downloads: 107
[texts]A Coupled Soil-Atmosphere Model of H2O2 on Mars - Bullock, Mark A.
The Viking Gas Chromatograph Mass Spectrometer failed to detect organic compounds on Mars, and both the Viking Labeled Release and the Viking Gas Exchange experiments indicated a reactive soil surface. These results have led to the widespread belief that there are oxidants in the martian soil. Since H2O2 is produced by photochemical processes in the atmosphere of Mars, and has been shown in the laboratory to reproduce closely the Viking LR results, it is a likely candidate for a martian soil oxi...
Keywords: MAGNETIC FIELD CONFIGURATIONS; SUNSPOTS; FREE ENERGY; SOLAR FLARES; ELECTRIC CURRENT; X RAYS; INVERSIONS; POLARITY
Downloads: 87
[texts]EFFECT OF TITANIUM, BORON AND MOLYBDENUM ON THE STRUCTURE OF AUSTENITIC 18/10 STEEL AFTER SOLUTION HEAT TREATMENT AND SENSITIZATION - BOJARSKI, Z.
AUSTENITIC STEELS TYPES OH18N9, IH18N10T, IH1810TB AND IH18N10MT MANUFACTURED IN POLAND AND IMPORTED X10CRNITI X10CRNITI18.9 STEEL WERE INVESTIGATED AFTER SOLUTION HEAT TREATMENT AND ANNEALING AT 500, 650 AND 750 C. THE METHODS USED WERE OPTICAL AND ELECTRON MICROSCOPY, X-RAY PHASE ANALYSIS AND X-RAY MICROANALYSIS. THE FOLLOWING INCLUSIONS WERE OBSERVED IN SOLUTION HEAT TREATED STEELS: IN OH18N9 STEEL NONMETALLIC OXIDE AND SULFIDE INCLUSIONS AND IN THE REMAINING TYPES OF STEELS ALSO CARBIDE, TIT...
Keywords: GAMMA RAYS; SOLAR FLARES; ELECTROMAGNETIC RADIATION; NUCLEI (NUCLEAR PHYSICS); PHOTONS; RADIO ASTRONOMY; X RAYS
Downloads: 131
[texts]Investigation of the X-ray emission of solar flares by the radioastronomical method - Neshpor, Yu. I
X-ray emission of solar flares investigated by radioastronomical method
Keywords: EMISSION; RADIO ASTRONOMY; SOLAR FLARES; X RAYS; RADIO ASTRONOMY; SOLAR FLARE; X-RAY
Downloads: 81
[texts]An airborne simulator investigation of the accuracy of an optical track command missile guidance system - Douvillier, J. J., Jr.
No Abstract Available
Keywords: GEOMAGNETISM; MAGNETIC DISTURBANCES; SOLAR FLARES; SOLAR PROTONS; GEOPHYSICS; LUMINOUS INTENSITY; SPECTROHELIOGRAPHS; TYPE 4 BURSTS
Downloads: 114
[texts]Electromagnetic Pulse: A Catastrophic Threat To The Homeland - Oreskovic, Robert
 Electromagnetic Pulse: A Catastrophic Threat To The Homeland by Robert Oreskovic & Army War College (U.S.). "This paper will examine the causes, threats, probable effects, and what measures can be taken to mitigate the potential impact to the Homeland."Digitized by www.dtic.mil
Keywords: EMP; Space weather; Solar flares; Solar activity; Space environment; CME; Electromagnetic Pulses
Downloads: 62
[texts]The 1859 Space Weather Event: Then And Now - Cliver, E. W.
The 1859 Space Weather Event: Then and Now by E W Cliver. "The 1859 space weather event, combining the first solar flare ever reported with arguably the largest geomagnetic storm ever observed, provided a dramatic opening to a new area of Sun-Earth studies. Here I describe solar science at the time of the discovery of the flare, recount the observation, and trace the developments that led to the correct interpretation of the 1859 solar-terrestrial event by Bartels in 1937." Digitized by The Def...
Keywords: EMP; CME; Space environment; Solar activity; Space weather; Solar flares; Electromagnetic Pulses
Downloads: 99
[texts]ASTROMETRY AND ASTROPHYSICS, NO. 1 - PHYSICS OF THE MOON AND PLANETS - KOVAL, I. K
PHYSICS OF MOON AND PLANETS
Keywords: CHARGED PARTICLES; INTERPLANETARY GAS; PARTICLE ACCELERATION; SOLAR FLARES; SOLAR PROTONS; PLASMA-PARTICLE INTERACTIONS; SOLAR COSMIC RAYS
Downloads: 242
[texts]High Energy, Single-Mode, All-Solid-State Nd:YAG Laser - Prasad, Narasimha S.
In this paper, recent progress made in the design and development of an all-solid-state, single longitudinal mode, conductively cooled Nd:YAG laser operating at 1064 nm wavelength for UV lidar for ozone sensing applications is presented. Currently, this pump laser provides an output pulse energy of greater than 1.1 J/pulse at 50 Hz PRF and a pulsewidth of 22 ns. The spatial profile of the output beam is a rectangular super Gaussian...
Keywords: GEOMAGNETISM; SUNSPOT CYCLE; SOLAR ACTIVITY; CORONAL MASS EJECTION; SOLAR FLARES; SOLAR WIND; HIGH SPEED; STREAMS
Downloads: 90
[movies]Solar Tsunamis - View with a Spin - NASA/Goddard Space Flight Center Scientific Visualization Studio
Push-in to a region of the Sun to witness a 'solar tsunami' after a flare event. The tsunami moves hot gas (bright) out of the region, revealing cooler regions (darker) below. This view rotates on the push-in to keep the region of the flare event visible (to the left in the final frame). Note: Closeup view of the tsunami (with rotation). Data Collected: 1998-06-13T10:00:01 - 1998-06-13T19:51:26. Animator: Tom Bridgman (GST)...
Keywords: Space science, Sun, Earth Science, Sun-earth Interactions, Solar Activity, Solar Flares; What -- Sun; What -- TRACE; What -- Earth
Downloads: 50
[movies]Solar Tsunamis - NASA/Goddard Space Flight Center Scientific Visualization Studio
Push-in to a region of the Sun to witness a 'solar tsunami' after a flare event. The tsunami moves hot gas (bright) out of the region, revealing cooler regions (darker) below. Note: Closeup view of the tsunami. Data Collected: 1998-06-13T10:00:01 - 1998-06-13T19:51:26. Animator: Tom Bridgman (GST). Scientist: Craig DeForest (SwRI), Meredith Wills-Davey (SwRI). Platforms/Sensors/Data Sets: SOHO/Extreme-UV Imaging Telescope (EIT), SOHO/Michelson Doppler Interferometer (MDI), TRACE, SOHO/Michelson ...
Keywords: Space science, Sun, Earth Science, Sun-earth Interactions, Solar Activity, Solar Flares; What -- Sun; What -- TRACE; What -- Earth
Downloads: 179
[texts]LIFE IN ORBIT - DIMOV, G
A DESCRIPTION IS GIVEN OF THE FIFTH CONFERENCE OF THE JOINT SOVIET-AMERICAN WORKING GROUP ON SPACE BIOLOGY AND MEDICINE AT TASHKENT.
Keywords: CHROMOSPHERE; THERMAL EMISSION; FILAMENTS; SOLAR FLARES; SOLAR X-RAYS; MAGNETIC FIELDS; OGO-5; OSO-7; PLASMAS (PHYSICS); SOLAR PHYSICS
Downloads: 69
[texts]ESTIMATING THE EFFECTIVENESS OF HUMAN WORKING CAPACITY UNDER SPACEFLIGHT CONDITIONS - BEREGOVOY, G. T.
A THEORETICAL APPROACH TO THE EVALUATION OF A COSMONAUT'S PSYCHOLOGICAL RESERVES AND PSYCHOPHYSIOLOGICAL FUNCTIONING IN THE SPACE MAN-MACHINE SYSTEM IS OUTLINED. DUE TO THE GREATER INDEPENDENCE OF THE MAN-MACHINE SYSTEM IN SPACE, THE COSMONAUT MUST BE CAPABLE OF PERFORMING AS AN OBSERVER, OPERATOR, REPAIRMAN AND AS A WORKING RESERVE ON THE SPACECRAFT. THE IDEAL FUNCTION OF THE COSMONAUT IN THE LATTER THREE ROLES IS DESCRIBED IN TERMS OF FOUR BASIC STEPS USED IN HUMAN FACTORS ENGINEERING: INFORMA...
Keywords: RADIO SIGNALS; SOLAR FLARES; SUDDEN IONOSPHERIC DISTURBANCES; VERY LOW FREQUENCIES; OMEGA NAVIGATION SYSTEM; SOLAR ACTIVITY EFFECTS; SUNSPOTS; TIME MEASUREMENT
Downloads: 62
[texts]Summary of Research/Publications - NON
Summary of research/publications include:(1) Comment on broadening of water microwave lines by collisions with helium atoms; (2) Calculations of ion-molecule deuterium fractionation reactions involving HD; (3) Ab initio predictions on the rotational spectra of carbon-chain carbene molecules; (4) Theoretical IR spectra of ionized naphthalene; (5) Improved collisional excitation rates for interstellar water; (6) Calculations on the competition between association and reaction for C3H H2; (7) Theor...
Keywords: MAGNETIC FIELD RECONNECTION; CONVECTION; MAGNETIC SIGNATURES; SOLAR FLARES; PHOTOSPHERE; SOLAR MAGNETIC FIELD; CORONAS; X RAYS; FOOTPRINTS; ELECTRIC CURRENT; CURRENT SHEETS
Downloads: 70
[texts]Thermal Vacuum Test of GLAS Propylene Loop Heat Pipe Development Model - Baker, Charles
This paper presents viewgraphs on Thermal Vacuum Tests of the GLAS (Geoscience Laser Altimeter System) Propylene Loop Heat Pipe Development Model. The topics include: 1) Flight LHP System (Laser); 2) Test Design and Objectives; 3) DM (Development Model) LHP (Loop Heat Pipe) Test Design; 4) Starter Heater and Coupling Blocks; 5) CC Control Heaters and PRT; 6) Heater Plates (Shown in Reflux Mode); 7) Startup Tests; 8) CC Control Heater Power Tests for CC Temperature Control; and 9) Control Tempera...
Keywords: EXTREME ULTRAVIOLET RADIATION; SHOCK WAVES; TYPE 2 BURSTS; SOLAR FLARES; CORONAL MASS EJECTION; EQUATORIAL REGIONS; MAGNETOHYDRODYNAMICS; SPECTROHELIOGRAPHS; SOHO MISSION
Downloads: 94
[texts]Heterogeneous Interactions of ClONO2 and HCl with Sulfuric Acid Tetrahydrate: Implications for the Stratosphere - Zhang, Renyi
The reaction probabilities for ClONO2H2O- HOCl HNO3 and ClONO2 HCl Cl2 HNO3 have been investigated on sulfuric acid tetrahydrate (SAT, H2SO4-4H2O)surfaces at temperatures between 190 and 230 K and at reactant concentrations that are typical in the lower stratosphere, using a fast-flow reactor coupled to a quadrupole mass spectrometer. The results indicate that the reaction probabilities as well as HCl uptake depend strongly on the thermodynamic state of SAT surface: they decrease significantly w...
Keywords: HUBBLE SPACE TELESCOPE; MECHANICAL PROPERTIES; EXPOSURE; X RAYS; TEMPERATURE CONTROL; PROPYLENE; INSULATION; DURABILITY; ALUMINUM; TEFLON (TRADEMARK); SOLAR FLARES
Downloads: 69
[texts]On the origin of hard x-ray and radio emission during the solar flare of 21 september 1961 (o proiskhozhdenii zhestkogo rentgenovskogo izlucheniya i radioizlucheniya pri solnechnoy vspyshke 28 sentyabrya 1961) - Korchak, A. A
Hard X-ray and radio emission during solar flare
Keywords: BREMSSTRAHLUNG; RADIO EMISSION; SOLAR FLARES; X RAY IRRADIATION; X RAYS; RADIO EMISSION; SOLAR FLARE; X-RAY IRRADIATION
Downloads: 58
[texts]Thermographic Qualification of Graphite/Epoxy Instrumentation Racks - Walker, James L.
A nondestructive evaluation method is desired for ensuring the 'as manufactured' and 'post service' quality of graphite/epoxy instrumentation rack shells. The damage tolerance and geometry of the racks dictate that the evaluation method be capable of identifying defects, as small as 0.25 inch 2 in area, over large acreage regions, tight compound radii and thickness transition zones. The primary defects of interest include voids, inclusions, delaminations and porosity...
Keywords: SOLAR FLARES; X RAYS; GAMMA RAY SPECTRA; GAMMA RAY OBSERVATORY; GAMMA RAY BURSTS; TEMPORAL RESOLUTION; PARTICLE ACCELERATION; FINE STRUCTURE; EMISSION
Downloads: 89
[texts]Atmospheric thermal lensing in laser resonators - Barnes, Norman P.
Atmospheric absorption degrades laser performance both by absorbing laser energy within the laser resonator, which increases the loss, and by inducing a thermal lens in the atmosphere. Atmospheric thermal lensing can be quite severe, even when the absorption coefficient is quite modest. A model is developed which describes atmospheric thermal lensing; time constants, which are associated with the establishment and decay of the atmospheric thermal lens, are determined; experiments are performed u...
Keywords: ELECTRON BEAMS; X RAYS; SOLAR FLARES; SOLAR PHYSICS; CHROMOSPHERE; GAMMA RAY OBSERVATORY; GAMMA RAYS; PARTICLE ACCELERATION; RADIO EMISSION; RADIO WAVES
Downloads: 83
[texts]Accurate attitude determination of the LACE satellite - Miglin, M. F.
The Low-power Atmospheric Compensation Experiment (LACE) satellite, launched in February 1990 by the Naval Research Laboratory, uses a magnetic damper on a gravity gradient boom and a momentum wheel with its axis perpendicular to the plane of the orbit to stabilize and maintain its attitude. Satellite attitude is determined using three types of sensors: a conical Earth scanner, a set of sun sensors, and a magnetometer...
Keywords: ALGORITHMS; ANOMALIES; COMPUTERIZED SIMULATION; CHARGE COUPLED DEVICES; ENVIRONMENTAL TESTS; ERROR ANALYSIS; POSITION ERRORS; PROTONS; SOLAR FLARES; STAR TRACKERS; TOPEX
Downloads: 89
[audio]Sentient Developments Podcast Episode 20120116 - George Dvorsky
Sentient Developments Podcast for the week of January 16, 2012. In this week's episode I talk about the assassination of an Iranian nuclear physicist and how scientists are increasingly coming to be seen as military targets. In addition, I discuss the Stuxnet worm, the devastating potential for solar storms, EMP, and botulinum attacks. Tracks used in this episode: Sepalcure: "Pencil Pimp" Todd Terje: "Snnoze 4 Love" Harald Grosskopf: "Synthesist" (Blondes remix) The Reflecting Skin: "Traffikers"
Keywords: terrorism; assassinations; science; nuclear proliferation; espionage; electro magnetic pulse; EMT; catastrophic risks; existential risks; solar flares; solar storms; foresight; botulinum
Downloads: 538
[texts]The Rumpler passenger airplane - Langsdorff, Werner
This report details the Rumpler Limousine which was a further development of the well known type 5 A 2. The fuselage, engine, cabin, wings, controls, and landing gear are all discussed.
Keywords: EARTH ATMOSPHERE; ULTRAVIOLET RADIATION; MANNED SPACE FLIGHT; SOLAR FLARES; SOLAR SYSTEM; SPACE EXPLORATION; UNMANNED SPACECRAFT; ASTRONOMICAL OBSERVATORIES; GAMMA RAYS; LECTURES
Downloads: 84
[texts]Benchmark Problems Used to Assess Computational Aeroacoustics Codes - Dahl, Milo D.
The field of computational aeroacoustics (CAA) encompasses numerical techniques for calculating all aspects of sound generation and propagation in air directly from fundamental governing equations. Aeroacoustic problems typically involve flow-generated noise, with and without the presence of a solid surface, and the propagation of the sound to a receiver far away from the noise source. It is a challenge to obtain accurate numerical solutions to these problems...
Keywords: RADIATION PROTECTION; HABITATS; ASTRONAUTS; EXPOSURE; RADIATION DOSAGE; RADIATION EFFECTS; SHIELDING; SOLAR CORPUSCULAR RADIATION; SOLAR FLARES; SOLAR STORMS
Downloads: 83
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